A group of savvy shoppers has cracked the code to saving big money on their weekly grocery bill.

Nichola Fish-Cumine hasn't paid full price for groceries in more than a year. She said she feeds her family of four in Halifax for less than $50 per week.

Many stores will price-match discounted items for the same price as competitors — but what some may not know is there is a secret twist to that offer that can save hundreds of dollars per year.

Fish-Cumine said some stores — including Wal-Mart — accept price matching from any grocery store in the country.

For instance, if there's a sale on ham in Alberta, she prints off the flyer and hands it to the cashier.

Then she hands over any coupons she may have for the same product.

Her latest grocery run — 50 cents for carrots, strawberries for $2, and ham for $1.99. She's part of a Facebook group that shares the best deals in their neighbourhood.

"There's so many forums out there. A lot of us will help each other find out where those sales are," said Fish-Cumine.

She also scans the website Smart Canucks, which posts dozens of weekly flyers from every province.

The savings are endless and not just for groceries. A recent bill from Carleton Cards peaked at $189, but she found a deal in an online forum and paid just over $5.

"My daughter has her own coupon book, she pulls out her flyers. She starts price-matching, too," said Fish-Cumine.

Recently, she scored free cans of soup from Superstore because she used a points card. She's putting her skills to good use, donating her hoard of canned goods to the local food bank.

She said she also wants low-income families to realize they can eat healthy food on a tight budget.

"Honestly if you do something like this, there's no reason for you not to have a healthy diet and making sure you're eating what you should," she said.

While Wal-Mart officially says you have to show a local store's prices to get the deal, Fish-Cumine says she hasn't been denied any bargains.